It'd be nice if Gmail could get with the times and add proper custom domain support to the consumer grade service. These email forwarding services aren't really ideal, and people shouldn't need to use them. They're never really going to have the tier of security as, say, Gmail.
More generally, the problem of email address exhaustion on consumer services is getting worse. Imagine being a kid making your first email account on Gmail or Outlook.com that doesn't look totally unprofessional. I got lucky to get full name @ gmail. (But, it's to Google's credit that they don't do the inane Yahoo approach of recycling addresses.)